Create the output target directory then incrementally execute the compile result as a system command. The output target is searched for the latest last-modification time and only those files in the output reference that are modified later than this time are submitted for compilation.

A runner that recursively searches the output target for files that match a given extension and compiles them incrementally as a system command. The output target is searched for the latest last-modification time and only those files in the output reference that are modified later than this time are submitted for compilation.